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Firefox Developer Tools vs Chrome DevTools: catalog facts
Firefox Developer Tools	Chrome DevTools
Free Free and included with Firefox.	Free Free and included with Google Chrome.
Windows, macOS, Linux	Windows, macOS, Linux
Built into Firefox with nothing extra to install Can debug Firefox for Android remotely	Built into Chrome with nothing extra to install Performance tracing and network inspection
Only available inside Firefox Tests Firefox's engine, so other browsers still need their own tools	AI features rely on Google's Gemini service Tests the Chromium engine only
Downloadable app	Downloadable app
Open source	Open source
License: MPL-2.0	License: BSD-3-Clause
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.